Motor Generator and Automobile Carrying the Same

a motor generator and stator technology, applied in the direction of electric propulsion mounting, magnetic circuit characterised by magnetic materials, shape/form/construction, etc., can solve the problems of difficult to reduce the total axis length including the winding, the possibility of reducing the body size is limited, and the motor generator is difficult to mount the stator. , to achieve the effect of a wide range of output performance, simple and low-cost molding process, and superior mountability
US20080001494A1Active Publication Date: 2008-01-03KAISHA TOYOTA MOTORS KABUSHIKI
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
KAISHA TOYOTA MOTORS KABUSHIKI
Publication Date
2008-01-03

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Abstract

In a stator core composed of a powder compacted magnetic body, a yoke part comprises a protrusion protruding from an axial end face of a tooth. The tooth has an axial length gradually decreases towards an outside along the radial direction of the stator core, and a circumferential length which gradually increases towards an outside along the radial direction of the stator core. In one of the cross sections of stator core perpendicular to a radial direction, the height difference between axial end faces of the yoke part and the tooth is substantially equal to an axial length of a coil end part. Further, a cross-sectional area of the tooth perpendicular to the radial direction is substantially maintained constant along the radial direction, and the cross-sectional area is secured at a junction between the tooth and the yoke part, while half of the cross-sectional area is secured in a circumferential cross section of the yoke part.
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Description

[0001] This is a 371 application of PCT / JP2005 / 020257 filed on 28 Oct. 2005, claiming priority to Japanese Applications No. 2004-316363 filed on 29 Oct. 2004 and No. 2005-126715 filed 25 Apr. 2005, the contents of which are incorporated herein by reference.FIELD OF THE INVENTION

[0002] The present invention relates to a motor generator composed of a stationary part (hereinafter also referred to as a stator) and a rotating part (hereinafter also referred to as a rotor) and an automobile having the motor generator mounted therein, and, more particularly, to a stator of a motor generator. BACKGROUND OF THE INVENTION

[0003] In a motor generator composed of a stator and a rotor, the stator consists of a stator core having a plurality of slots formed thereto, and coils wound around comb teeth (hereinafter also referred to simply as “teeth”) formed between the slots. On the other hand, the rotor consists of a rotor core, magnets bearing magnetic force, and a shaft working as an axis of rot...

Claims

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